By the time, my AAT (Automatic Antenna Tracker) need some improvement/upgrade.
I have first the idea to upgrade pan gear as mine was only a timing belt which tend to jump some teeth and don't do the job for heavier antenna.
the old timing belt :
I got a set of gear from Charles at MFD, but it need some machining to put on the gear :
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I have first the idea to upgrade pan gear as mine was only a timing belt which tend to jump some teeth and don't do the job for heavier antenna.
the old timing belt :
I got a set of gear from Charles at MFD, but it need some machining to put on the gear :
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I made an antenna mount for UHF antenna, it should be very helpful for mutlirotors owners. The antenna can be dissembled for transport, just 1/4 turn release and perfect polarisation.
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Hi,
I add a nice feature on my FPV penguin, it's a quick release canopy like on the pic below :
Rear :
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I add a nice feature on my FPV penguin, it's a quick release canopy like on the pic below :
Rear :
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For my back pack fpv hexacopter, I use the driver only and pick from it the gps coordinate, and send it to an arduino UNO board with lcd shield to display and keep the plane location
I put an old myflydream driver with an arduino UNO + shield in the same box
here is the code I use, gps tx connected on pin3 :
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I put an old myflydream driver with an arduino UNO + shield in the same box
here is the code I use, gps tx connected on pin3 :
Quote:
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#include <SoftwareSerial.h> #include <LiquidCrystal.h> #include <TinyGPS.h> LiquidCrystal lcd(8, 13, 9, 4, 5, 6, 7); TinyGPS gps; #define RXPIN 3 #define TXPIN 2 SoftwareSerial nss(RXPIN, TXPIN); void gpsdump(TinyGPS &gps); bool feedgps(); void printFloat(double f, int digits = 2); void setup() { Serial.begin(115200); nss.begin(38400); lcd.begin(16, 2); //Print a message to the LCD. lcd.print("Elaboration"); lcd.setCursor(0,1); lcd.print("coordonnees GPS"); //We test the version of the library Serial.print("Testing TinyGPS library v. "); Serial.println(TinyGPS::library_version()); Serial.println(sizeof(TinyGPS)); Serial.println(); } void loop() { bool newdata = false; unsigned long start = millis(); while(millis() - start < 5000){ if (feedgps()) newdata = true; } if (newdata) { Serial.println("Acquisition Data"); Serial.println("————-"); gpsdump(gps); Serial.println("————-"); Serial.println(); } } void printFloat(double |
Flying in an area with a lot of interferences, I found an idea (not new and use by professionals), why not killing the parasites with a band pass cavity filter.
I found one on ebay, I modified it to suit 1010Mhz (a spectrum analyser is needed for that), it's the blue thing from REACTEL.
I made a test video, with 2 VTx emitting at the same time, on for simulating parasites (800 mW at 980 Mhz with a dipole) and one for simulating a long range plane flying away (200 mW at 1010 Mhz with a dummy load on it).
I'm very happy with it, just look at the result, first test a good Vrx (lawmate) with no cavity, second test RMRC with the cavity filter.
The test
Conclusion, some more professionnal than me could make filter like that for specific frequency, that would be very usefull for us. May be IBcrazy ?
Cedric
I found one on ebay, I modified it to suit 1010Mhz (a spectrum analyser is needed for that), it's the blue thing from REACTEL.
I made a test video, with 2 VTx emitting at the same time, on for simulating parasites (800 mW at 980 Mhz with a dipole) and one for simulating a long range plane flying away (200 mW at 1010 Mhz with a dummy load on it).
I'm very happy with it, just look at the result, first test a good Vrx (lawmate) with no cavity, second test RMRC with the cavity filter.
| Cavity Filter (1 min 9 sec) |
The test
Conclusion, some more professionnal than me could make filter like that for specific frequency, that would be very usefull for us. May be IBcrazy ?
Cedric
